package lishizheng.demo03;

//推导lambda表达式
public class TestLambda {

    //3.静态内部类
    static class Like2 implements ILike{
        @Override
        public void lambda() {
            System.out.println("I like Lambda2");
        }
    }

    public static void main(String[] args) {
        Like like = new Like();
        like.lambda();
        Like2 like2 = new Like2();
        like2.lambda();

        //4. 局部内部类
        class Like3 implements ILike{
            @Override
            public void lambda() {
                System.out.println("I like Lambda3");
            }
        }

        Like3 like3 = new Like3();
        like3.lambda();

        //5.匿名内部类,没有类的名称，必须借助接口或者父类
        ILike like4 = new ILike() {
            @Override
            public void lambda() {
                System.out.println("I like Lambda4");
            }
        };
        like4.lambda();

        //6.用lambda简化
        ILike like5  = ()-> {
            System.out.println("I like Lambda5");
        };
        like5.lambda();
    }
}

//1.定义一个函数式接口
interface ILike{
    void lambda();
}

//2.实现类
class Like implements ILike{
    @Override
    public void lambda() {
        System.out.println("I like Lambda");
    }
}